Hello, I would be happy to help you with your question.
There is not enough fluid within the pregnancy
sac to produce a sensation of "leaking" of fluid, so I do not think that this is related to the pregnancy itself. Also, if you were miscarrying, there would almost certainly be bleeding as well. This, of course, is assuming that you are correct in stating that you are 7 weeks along and not further along in the pregnancy. It most likely represent water within the vagina from the bath that made its way out.
I hope that this helps. Good luck and thank you for visiting.